| 摘要 |
A pin tumbler cylinder assembly comprises a cylinder housing (501), a plug (502) rotatably mounted in the cylinder housing, a keyway extending along the longitudinal axis of the plug and open at a front end of the plug to allow insertion of a key, a plurality of tumbler pin passageways extending inwardly from the circumference of the plug (502) to the keyway, and a plurality of driver pin passageways extending outwardly from the interior of the cylinder housing (501), the tumbler pin passageways being aligned with the driver pin passageways in one rotational position of the plug (502). A plurality of tumbler pins (3) are slidably mounted in respective tumbler pin passageways. The tumbler pins (3) include telescopic tumbler pin assemblies including an outer pin and an inner pin slidably mounted in the outer pin. In one form of telescopic tumbler pin assembly an inner pin (3D) engages a dome (23) in a notch of a key blade; in another form of telescopic tumbler pin assembly an inner pin (3B) is received in a cavity (201) in a notch of a key blade. |
